<template>
  <div class="article-page">
    <!-- 筛选区域 -->
    <el-card>
      <div slot="header">
        <!-- 面包屑 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>内容管理</el-breadcrumb-item>
        </el-breadcrumb>
      </div>
      <!-- 表单 -->
      <el-form label-width="80px">
        <el-form-item label="状态：">
          <el-radio-group v-model="reqParams.status">
            <el-radio :label="null">全部</el-radio>
            <el-radio :label="0">草稿</el-radio>
            <el-radio :label="1">待审核</el-radio>
            <el-radio :label="2">审核通过</el-radio>
            <el-radio :label="3">审核失败</el-radio>
            <el-radio :label="4">已删除</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="频道：">
          <!-- 1. :value="reqParams.channel_id" 传递频道ID给子组件 -->
          <!-- 2. @input="reqParams.channel_id=$event" 监听子组件触发的input事件，$event触发事件的传参 -->
          <!-- <my-channel :value="reqParams.channel_id" @input="reqParams.channel_id=$event"></my-channel> -->
          <!-- 3. 使用v-model进行双向数据绑定 -->
          <my-channel v-model="reqParams.channel_id"></my-channel>
        </el-form-item>
        <el-form-item label="日期：">
          <el-date-picker
            @change="changeDate"
            v-model="dateArr"
            type="daterange"
            range-separator="至"
            start-placeholder="开始日期"
            end-placeholder="结束日期">
          </el-date-picker>
        </el-form-item>
        <el-form-item label="">
          <el-button @click="filterArticle()" type="primary">筛选</el-button>
        </el-form-item>
      </el-form>
    </el-card>
    <!-- 结果区域 -->
    <el-card style="margin-top:20px">
      <div slot="header">根据筛选条件共查询到 {{total}} 条结果：</div>
      <!-- 表格 -->
      <el-table :data="articles">
        <el-table-column label="封面">
          <template slot-scope="scope">
            <el-image :src="scope.row.cover.images[0]" style="width:180px;height:120px">
              <div slot="error">
                <img src="../../assets/error.png" style="width:180px;height:120px" alt="">
              </div>
            </el-image>
          </template>
        </el-table-column>
        <el-table-column label="标题" prop="title" width="400px"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-tag v-if="scope.row.status===0" type="info">草稿</el-tag>
            <el-tag v-if="scope.row.status===1">待审核</el-tag>
            <el-tag v-if="scope.row.status===2" type="success">审核通过</el-tag>
            <el-tag v-if="scope.row.status===3" type="warning">审核失败</el-tag>
            <el-tag v-if="scope.row.status===4" type="danger">已删除</el-tag>
          </template>
        </el-table-column>
        <el-table-column label="发布时间" prop="pubdate"></el-table-column>
        <el-table-column label="阅读数" prop="read_count" width="120px"></el-table-column>
        <el-table-column label="评论数" prop="comment_count" width="120px"></el-table-column>
        <el-table-column label="点赞数" prop="like_count" width="120px"></el-table-column>
        <el-table-column label="操作" width="120px">
          <template slot-scope="scope">
            <el-button @click="$router.push(`/publish?id=${scope.row.id}`)" type="primary" icon="el-icon-edit" circle plain></el-button>
            <el-button @click="deleteArticle(scope.row.id)" type="danger" icon="el-icon-delete" circle plain></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <el-pagination
        style="margin-top:20px"
        background
        layout="prev, pager, next"
        @current-change="changePager"
        :current-page="reqParams.page"
        :page-size="reqParams.per_page"
        :total="total">
      </el-pagination>
    </el-card>
  </div>
</template>
<script>
export default {
  name: 'ArticlePage',
  data () {
    return {
      // 请求参数对象
      reqParams: {
        status: null,
        channel_id: null,
        begin_pubdate: null,
        end_pubdate: null,
        // 分页信息
        page: 1,
        per_page: 20
      },
      // 频道选项
      // channelOptions: [],
      // 日期范围 [起始时间,结束时间]
      dateArr: [],
      // 文章列表
      articles: [],
      // 总条数
      total: 0
    }
  },
  created () {
    // this.getChannelOptions()
    this.getArticles()
  },
  methods: {
    // 获取频道选项数据
    // async getChannelOptions () {
    //   const res = await this.$http.get('/v1_0/channels')
    //   this.channelOptions = res.data.data.channels
    // },
    // 获取文章列表数据
    async getArticles () {
      // post 传递参数 post(url,参数对象)
      // get 传递参数 get(url,{params:参数对象})
      const res = await this.$http.get('/v1_0/mp/articles', { params: this.reqParams })
      this.articles = res.data.data.results
      this.total = res.data.data.total_count
    },
    // 切换分页
    changePager (newPage) {
      this.reqParams.page = newPage
      this.getArticles()
    },
    // 筛选文章
    filterArticle () {
      this.reqParams.page = 1
      // 在做筛选的时候从第一页开始
      // 获取文章前，收集筛选条件
      // 1. 状态，频道，是自动收集的
      // 2. 日期范围需要手动收集
      this.getArticles()
    },
    // 选择日期
    changeDate (dateArr) {
      // 当你清空的时候，dateArr 是 null , 选择日期后 dateArr = [起始时间，结束时间]
      if (dateArr) {
        this.reqParams.begin_pubdate = dateArr[0]
        this.reqParams.end_pubdate = dateArr[1]
      } else {
        this.reqParams.begin_pubdate = null
        this.reqParams.end_pubdate = null
      }
    },
    // 删除
    deleteArticle (id) {
      // 弹出确认框
      this.$confirm('此操作将永久删除该文章, 是否继续?', '温馨提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        // 点击确认触发then
        // 1. 发起删除请求
        await this.$http.delete(`/v1_0/mp/articles/${id}`)
        // 2. 成功提示
        this.$message.success('删除成功')
        // 3. 更新当前列表
        this.getArticles()
      }).catch(() => {
        // 点击确认触发catch
      })
    }
  }
}
</script>
<style scoped lang="less"></style>
